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Current filter externally coupled to cable

a current filter and cable technology, applied in the direction of connection contact material, waveguide type device, mechanical apparatus, etc., can solve the problems of insufficient efficiency of internal filter, inability to efficiently cope with emps with energy spread out in a wide frequency range, and the protection system may be disabled, so as to simplify installation, manufacturing and maintenance, the effect of improving the protection from electromagnetic pulses

Active Publication Date: 2022-04-28
AGENCY FOR DEFENSE DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a device that can protect cables from electromagnetic pulses (EMPs) that can damage equipment. It does this by using a special cylinder to induce a current in the cable that then flows to a ground plane, which can help to shield the cable from EMPs. The device is easy to install, manufacture, and maintain.

Problems solved by technology

However, electromagnetic pulses (EMPs) or HEMPs have very strong energy, and this strong energy transfers energy exceeding the shielding performance of general shields and filters to the cable, and thus the protection system may be disabled.
In addition, in the case of an internal filter, there is a problem in that the internal filter does not function properly when a received signal and an external noise signal have the same frequency.
In addition, when a standard or design target is given, it is difficult to change the internal filter and an external cable shield, and thus, it is difficult to efficiently cope with EMPs with energy spread out in a wide frequency range.
In addition, the thickness of the shield and the mounting position of the filter are fixed, and it is impossible to move the mounting position or change the thickness as necessary.

Method used

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  • Current filter externally coupled to cable
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Embodiment Construction

[0029]Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. In this regard, the present embodiments may have different forms and should not be construed as being limited to the descriptions set forth herein. Accordingly, the embodiments are merely described below, by referring to the figures, to explain aspects of the present description. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. Expressions such as “at least one of,” when preceding a list of elements, modify the entire list of elements and do not modify the individual elements of the list.

[0030]As the present description allows for various changes and numerous embodiments, certain embodiments will be illustrated in the drawings and described in the written description. Effects and features of one or more embodiments and methods of a...

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Abstract

A current filter externally coupled to a cable includes a coupling portion coupled to a cable portion to surround the cable portion including at least one cable, the coupling portion including a flexible metal, and a ground portion detachably attached to the coupling portion and transmitting a current flowing through the coupling portion to a ground plane.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is based on and claims priority under 35 U.S.C. §119 to Korean Patent Application No. 10-2020-0139748, filed on Oct. 26, 2020, in the Korean Intellectual Property Office, the disclosure of which is incorporated by reference herein in its entirety.BACKGROUND1. Field[0002]One or more embodiments relate to a current filter externally coupled to a cable to reduce the influence of external electromagnetic waves on the cable.2. Description of Related Art[0003]High-altitude electromagnetic pulses (HEMPs) refer to electromagnetic pulses generated by a high-altitude nuclear explosion. In recent years, interest in HEMP protection facilities that can defend against HEMPs is increasing due to a nuclear threat caused by North Korea's nuclear development. The evaluation of these protection facilities is done through evaluation by electromagnetic shielding effectiveness (SE) and pulsed current injection (PCI) testing, and the contents th...

Claims

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Application Information

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IPC IPC(8): H03H7/01H02G3/22
CPCH03H7/0138H02G3/22H02G3/0481H03H1/0007H01P1/202H05K9/0098F16B2/08H01B11/10H03H7/0115
Inventor JEONG, KIL SOOKIM, JEONG SEOPSOHN, JU HANGLEE, DONG HYEOKKIM, CHANG GYUNCHI, SOUNG HWANJUN, HEEJAEPARK, YONG WOO
Owner AGENCY FOR DEFENSE DEV